Grand Canal of China

The Grand Canal runs from Beijing to Hangzhou, about 1,776 km. Its oldest sections date to the 5th century BCE, and the Sui dynasty linked the parts into one waterway around 605-609 CE. UNESCO added it to the World Heritage List in 2014, and parts still carry cargo.

Lengths quoted vary from about 1,770 km to well over 2,000 km depending on whether branches and old courses are counted.